--- a/openalbridge/openalbridge.c Sat Apr 17 04:59:10 2010 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,498 +0,0 @@
-/*
- * OpenAL Bridge - a simple portable library for OpenAL interface
- * Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; version 2 of the License
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
-#include "openalbridge.h"
-
-
-#ifdef __CPLUSPLUS
-extern "C" {
-#endif
-
- /*Sources are points emitting sound*/
- ALuint *Sources;
- /*Buffers hold sound data*/
- ALuint *Buffers;
- /*index for Sources and Buffers*/
- ALuint globalindex, globalsize, increment;
-
- ALboolean openalReady = AL_FALSE;
-
- ALboolean openal_close (void) {
- /*Stop all sounds, deallocate all memory and close OpenAL */
- ALCcontext *context;
- ALCdevice *device;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- alSourceStopv (globalsize, Sources);
- alDeleteSources (globalsize, Sources);
- alDeleteBuffers (globalsize, Buffers);
-
- free(Sources);
- free(Buffers);
-
- context = alcGetCurrentContext();
- device = alcGetContextsDevice(context);
-
- alcMakeContextCurrent(NULL);
- alcDestroyContext(context);
- alcCloseDevice(device);
-
- openalReady = AL_FALSE;
-
- return AL_TRUE;
- }
-
- ALboolean openal_ready(void) {
- return openalReady;
- }
-
- ALboolean openal_init(char* programname, ALboolean usehardware, uint32_t memorysize) {
- /*Initialize an OpenAL contex and allocate memory space for data and buffers*/
- ALCcontext *context;
- ALCdevice *device;
- const ALCchar *default_device;
-
- prog = programname;
-
- /*Position of the listener*/
- ALfloat ListenerPos[] = { 0.0, 0.0, 0.0 };
- /*Velocity of the listener*/
- ALfloat ListenerVel[] = { 0.0, 0.0, 0.0 };
- /*Orientation of the listener. (first 3 elements are "at", second 3 are "up")*/
- ALfloat ListenerOri[] = { 0.0, 0.0, -1.0, 0.0, 1.0, 0.0 };
-
- if (openalReady == AL_TRUE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL already initialized", prog);
- return AL_FALSE;
- }
-
- if (usehardware == AL_TRUE)
- device = alcOpenDevice(NULL);
- else
- device = alcOpenDevice("Generic Software");
-
- if (device == NULL) {
- errno = ENODEV;
- err_ret("(%s) WARN - Failed to open sound device", prog);
- return AL_FALSE;
- }
- err_msg("(%s) INFO - Output device: %s", prog, alcGetString(device, ALC_DEVICE_SPECIFIER));
-
- context = alcCreateContext(device, NULL);
- alcMakeContextCurrent(context);
- alcProcessContext(context);
-
- if (AlGetError("(%s) WARN - Failed to create a new contex") != AL_TRUE)
- return AL_FALSE;
-
- /*allocate memory space for buffers and sources*/
- if (memorysize == 0)
- globalsize = 50;
- else
- globalsize = memorysize;
- increment = globalsize;
-
- Buffers = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
- Sources = (ALuint*) Malloc(sizeof(ALuint)*globalsize);
-
- /*set the listener gain, position (on xyz axes), velocity (one value for each axe) and orientation*/
- alListenerf (AL_GAIN, 1.0f );
- alListenerfv(AL_POSITION, ListenerPos);
- alListenerfv(AL_VELOCITY, ListenerVel);
- alListenerfv(AL_ORIENTATION, ListenerOri);
-
- if (AlGetError("(%s) WARN - Failed to set Listener properties") != AL_TRUE)
- return AL_FALSE;
-
- openalReady = AL_TRUE;
-
- alGetError(); /* clear any AL errors beforehand */
- return AL_TRUE;
- }
-
-
- ALboolean helper_realloc (void) {
- /*expands allocated memory when loading more sound files than expected*/
- int oldsize = globalsize;
- globalsize += increment;
-
-#ifdef DEBUG
- err_msg("(%s) INFO - Realloc in process from %d to %d\n", prog, oldsize, globalsize);
-#endif
-
- Buffers = (ALuint*) Realloc(Buffers, sizeof(ALuint)*globalsize);
- Sources = (ALuint*) Realloc(Sources, sizeof(ALuint)*globalsize);
-
- return AL_TRUE;
- }
-
-
- ALint openal_loadfile (const char *filename){
- /*Open a file, load into memory and allocate the Source buffer for playing*/
- ALfloat SourcePos[] = { 0.0, 0.0, 0.0 }; /*Position of the source sound*/
- ALfloat SourceVel[] = { 0.0, 0.0, 0.0 }; /*Velocity of the source sound*/
- ALenum format;
- ALsizei bitsize, freq;
- char *data;
- uint32_t fileformat;
- ALenum error;
- FILE *fp;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*when the buffers are all used, we can expand memory to accept new files*/
- if (globalindex == globalsize)
- helper_realloc();
-
- /*detect the file format, as written in the first 4 bytes of the header*/
- fp = Fopen (filename, "rb");
-
- if (fp == NULL)
- return -1;
-
- error = fread (&fileformat, sizeof(uint32_t), 1, fp);
- fclose (fp);
-
- if (error < 0) {
- errno = EIO;
- err_ret("(%s) ERROR - File %s is too short", prog, filename);
- return -2;
- }
-
- /*prepare the buffer to receive data*/
- alGenBuffers(1, &Buffers[globalindex]);
-
- if (AlGetError("(%s) ERROR - Failed to allocate memory for buffers") != AL_TRUE)
- return -3;
-
- /*prepare the source to emit sound*/
- alGenSources(1, &Sources[globalindex]);
-
- if (AlGetError("(%s) ERROR - Failed to allocate memory for sources") != AL_TRUE)
- return -4;
-
-
- switch (ENDIAN_BIG_32(fileformat)) {
- case OGG_FILE_FORMAT:
- error = load_oggvorbis (filename, &format, &data, &bitsize, &freq);
- break;
- case WAV_FILE_FORMAT:
- error = load_wavpcm (filename, &format, &data, &bitsize, &freq);
- break;
- default:
- errno = EINVAL;
- err_ret ("(%s) ERROR - File format (%08X) not supported", prog, ENDIAN_BIG_32(fileformat));
- return -5;
- break;
- }
-
-
- /*copy pcm data in one buffer*/
- alBufferData(Buffers[globalindex], format, data, bitsize, freq);
- free(data); /*deallocate data to save memory*/
-
- if (AlGetError("(%s) ERROR - Failed to write data to buffers") != AL_TRUE)
- return -6;
-
- /*set source properties that it will use when it's in playback*/
- alSourcei (Sources[globalindex], AL_BUFFER, Buffers[globalindex] );
- alSourcef (Sources[globalindex], AL_PITCH, 1.0f );
- alSourcef (Sources[globalindex], AL_GAIN, 1.0f );
- alSourcefv(Sources[globalindex], AL_POSITION, SourcePos );
- alSourcefv(Sources[globalindex], AL_VELOCITY, SourceVel );
- alSourcei (Sources[globalindex], AL_LOOPING, 0 );
-
- if (AlGetError("(%s) ERROR - Failed to set Source properties") != AL_TRUE)
- return -7;
-
- alGetError(); /* clear any AL errors beforehand */
-
- /*returns the index of the source you just loaded, increments it and exits*/
- return globalindex++;
- }
-
-
- ALboolean openal_toggleloop (uint32_t index){
- /*Set or unset looping mode*/
- ALint loop;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
-
- alGetSourcei (Sources[index], AL_LOOPING, &loop);
- alSourcei (Sources[index], AL_LOOPING, !((uint8_t) loop) & 0x00000001);
- if (AlGetError("(%s) ERROR - Failed to get or set loop property") != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_setvolume (uint32_t index, uint8_t percentage) {
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*Set volume for sound number index*/
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
-
- if (percentage > 100)
- percentage = 100;
- alSourcef (Sources[index], AL_GAIN, (float) percentage/100.0f);
- if (AlGetError2("(%s) ERROR - Failed to set volume for sound %d\n", index) != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_setglobalvolume (uint8_t percentage) {
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*Set volume for all sounds*/
- if (percentage > 100)
- percentage = 100;
- alListenerf (AL_GAIN, (float) percentage/100.0f);
- if (AlGetError("(%s) ERROR - Failed to set global volume") != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_togglemute () {
- /*Mute or unmute sound*/
- ALfloat mute;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- alGetListenerf (AL_GAIN, &mute);
- if (mute > 0)
- mute = 0;
- else
- mute = 1.0;
- alListenerf (AL_GAIN, mute);
- if (AlGetError("(%s) ERROR - Failed to set mute property") != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_fade (uint32_t index, uint16_t quantity, ALboolean direction) {
- /*Fade in or out by calling a helper thread*/
-#ifndef _WIN32
- pthread_t thread;
-#else
- HANDLE Thread;
- DWORD threadID;
-#endif
- fade_t *fade;
-
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- fade = (fade_t*) Malloc(sizeof(fade_t));
- fade->index = index;
- fade->quantity = quantity;
-
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
-
- switch (direction) {
- case FADE_IN:
-#ifndef _WIN32
- pthread_create(&thread, NULL, helper_fadein, (void*) fade);
-#else
- Thread = _beginthread(&helper_fadein, 0, (void*) fade);
-#endif
- break;
- case FADE_OUT:
-#ifndef _WIN32
- pthread_create(&thread, NULL, helper_fadeout, (void*) fade);
-#else
- Thread = _beginthread(&helper_fadeout, 0, (void*) fade);
-#endif
- break;
- default:
- errno = EINVAL;
- err_ret("(%s) ERROR - Unknown direction for fading", prog, index, globalindex);
- free(fade);
- return AL_FALSE;
- break;
- }
-
-#ifndef _WIN32
- pthread_detach(thread);
-#endif
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_fadeout (uint32_t index, uint16_t quantity) {
- /*wrapper for fadeout*/
- return openal_fade(index, quantity, FADE_OUT);
- }
-
-
- ALboolean openal_fadein (uint32_t index, uint16_t quantity) {
- /*wrapper for fadein*/
- return openal_fade(index, quantity, FADE_IN);
- }
-
-
- ALboolean openal_setposition (uint32_t index, float x, float y, float z) {
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
-
- alSource3f(Sources[index], AL_POSITION, x, y, z);
- if (AlGetError2("(%s) ERROR - Failed to set position for sound %d)", index) != AL_TRUE)
- return AL_FALSE;
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_playsound (uint32_t index){
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*Play sound number index*/
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
- alSourcePlay(Sources[index]);
- if (AlGetError2("(%s) ERROR - Failed to play sound %d)", index) != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_pausesound(uint32_t index){
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*Pause sound number index*/
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
- alSourcePause(Sources[index]);
- if (AlGetError2("(%s) ERROR - Failed to pause sound %d)", index) != AL_TRUE)
- return AL_FALSE;
-
- return AL_TRUE;
- }
-
-
- ALboolean openal_stopsound(uint32_t index){
- if (openalReady == AL_FALSE) {
- errno = EPERM;
- err_ret("(%s) WARN - OpenAL not initialized", prog);
- return AL_FALSE;
- }
-
- /*Stop sound number index*/
- if (index >= globalsize) {
- errno = EINVAL;
- err_ret("(%s) ERROR - Index out of bounds (got %d, max %d)", prog, index, globalindex);
- return AL_FALSE;
- }
- alSourceStop(Sources[index]);
- if (AlGetError2("(%s) ERROR - Failed to stop sound %d)", index) != AL_TRUE)
- return AL_FALSE;
-
- alGetError(); /* clear any AL errors beforehand */
-
- return AL_TRUE;
- }
-
-#ifdef __CPLUSPLUS
-}
-#endif